Tipping of cigarettes



.Spt. 20, 1938.

J. SHACKLETON 2,130,700

TIPPING OF CIGARETTES Filed Dec; 29, 1956 a Sheets-Shget 1 rwksmc/raevw ATV.

Sept. 20, 1938. SHACKLETON 2,130,700

\ TIPPING OF CIGARETTES Filed Dec. 29, 1936 3 Sheets-Sheet 2 Sept. 20, 1938. J. SHACKLETON TIPPING OF CIGARET'IES Filed Dec. 29, 1936 3 Sheets-Sheet 3 Patented Sept. 20, 1938 PATENT OFFICE TIPPING F CIGARETTES Jack Shackleton, London, England, assignor to American Machine & Foundry Company, New York,. N. 31., a corporation of New Jersey Application December 29, 1936, Serial No. 118,114

a In Great Britain January 2, 1936 3 Claims.

This invention relates to the tipp f c arettes, i. e., the provision of cork, gold leaf, waxed paper or like tips to the ends of cigarettes and has for its object the provision of improved mechanism for severing a web of cork strip or the like into sections which are subsequently attached to the web of cigarette paper forming the wrapper element of the cigarette rod.

It is an aim of the invention to provide an improved means of feeding the cork strip to the severing mechanism which avoids the necessity of revolving or oscillating heavy parts whereby an increased rate of feed may be obtained consistent with the high speed of production of cigarettes obtaining with present day machines.

According to the present invention the severing means are located in a fixed position and the cork or like strip is intermittently fed thereto by a Geneva drive device. The cork strip is fed from a reel by a continuously operating drive, a loop of the web being formed between the continuous' drive and the intermittent Geneva drive. It is preferred that the driving period of the Geneva device comprises the major portion (preferably 270) of the cycle of the driving element of the Geneva drive.

Further features of the invention will be hereinafter described and defined in the claims.

In the accompanying diagrammatic drawings:

Figure 1 is a front elevation showing the general arrangement of the parts;

Figures 2 and 3 are cross sections;

Figure 4 is a detail of the Geneva drive;

Figure 5 is a front elevation of a modification;

Figures 6 and '7 being views of a modified Geneva drive.

In carrying the invention into effect according to one convenient mode a cutting device is provided comprising a vertically reciprocating knife element l0 which co-operates with a fixed ledger plate ll mounted below the knife. The knife is mounted in a block I2 carried by guide rods l3 and which is provided with a horizontal slot [4 into which a squared sleeve IS on a pin it of a crank disc ll enters whereby the block is reciprocated vertically.

The crank shaft l8 (Fig. 2) of the crank disc is provided with a gear wheel I!) meshing into another gear wheel 20 rigid upon a shaft 2! which carries the driving element 22 of a Geneva drive. The driven element 23 of the Geneva drive is carried by a feed roll shaft 24 upon the end of which the upper feed roll 25 for the cork or like. web is mounted. A lower pressure roll 26 is provided which is freely mounted upon a pivoted lever 21 and is spring pressed toward the upper feed roll 25. The lower pressure roll may if desired be positively driven.

The gear wheel 20 associated with the driving element of the Geneva drive meshes into a further gear wheel 28 by which the driving roll 29 of a continuous drive for the cork or like web is driven. This driving roll also has a co-operating pressure roll 30 which is mounted upon a lever 3| and spring pressed toward the driven roll 33.

The continuous feed rolls 29, 30 are spaced from the intermittently operating feed rolls 25 and 26 and are driven at a speed such that a loop 32in the cork or like web will be formed between the continuous feed and the intermittent feed.

Adjacent the intermittent feed rolls 25, 26 adjustable guiding means providing a horizontal guide surface 33 are arranged on the leading in side of the intermittent feed rolls, such surface being curved over at its outer end 34. These guide means are of known form comprising parallel groove elements adjustable towards one another by the mounting 35 and bodily whereby the web is presented in the correct position to the severing means.

The Geneva drive may be of any suitable form. Thus the driving element may be provided with a single driving pin 22, while the driven element 23 is provided with four operating slots 23a so that the driven element is turned 90 for each revolution of the driving element. Any other relative angular motion may be provided.

Preferably, however, the Geneva drive is arranged to provide a drive period extending over 270 of the cycle of the driving element of the Geneva drive, the non-driving or cutting period then only being 90.

Thus referring to Figures 5 to 7 the driving element or disc 36 is mounted in a plane parallel to the plane of the driven disc 31 which is secured to the shaft 24 of the intermittently driven feed 'roll 25.

The driving disc 36 is provided with a driving pin 38 and the driven disc 31 has four grooves- 39 on its face into which the pin 38 is adapted to engage. The pin 38 enters and leaves the grooves 39 from their inner ends which communicate with a common central recess 40.

By such arrangement the pin 38 will be located in each groove in turn during 270 of the rotary cycle of the driving disc 36. During the remaining 90 there will be no drive as the pin 38 is then passing through the recess 40 from one groove 39 to the next.

In order to lock the discs 36 and 31 during a non-driving period the disc 36 is provided with an upstanding wall 4| which is adapted to engage pairs of pins 42 carried by the driven disc 31. The wall 4| is interrupted so that the locking engagement with a pair of pins will only take place while the driving pin 38 is free of the grooves 39.

With this form of intermittent drive the means for reciprocating the knife l0 previously described are not suitable and in their place a'rotary cam 43 (see Figure 5) is provided which engages a roller 44 on the knife mounting 45 which is carried in a guiding support 46.

The driving roll of the intermittent drive may be provided with means for varying its diameter for adjusting its circumference according to variations in the length of tip desired. Also means may be provided for varying the relative speeds of the intermittent and continuous drives whereby the desired length of loop in the web is obtained.

The cork strip reel or bobbin 41 is mounted upon a suitable spindle 48 and the web 49 is led through the continuous feed rolls 29, 30 and thence downward to form the free loop 32, and then upwardly through the guide 33, 34 and between the intermittent feed rolls 25, 26 to the knife Ill where it is severed into sections which are fed by suitable means and applied to a cigarette paper web having spaced adhesive patches.

In some cases it may be desirable to tension the loop 32 for example by running it over a roll acted upon by a light spring, or by allowing a light weight to be freely suspended by the loop.

Having now described my invention, what I claim as new and desire to secure by Letters Patent iszl. Mechanism for feeding and severing a web, said mechanism comprising in combination a feed-roll couple adapted to advance a supply web of cigarette tipping material, one of said rolls having a shaft provided with a pinion and by which said feed-roll couple is actuated, a severing device, a second shaft provided with a pinion and by which said severing device is actuated, a third shaft provided with a pinion, and also provided with the driving element of a Geneva drive, and by'which' said Geneva drive is actuated, a fourth shaft provided with the driven element of said Geneva drive and with one roll of a second feed-roll-couple adapted to operate upon said web intermediate said first-named feed-roll-couple and said severing device, to feed the Web intermittently to said device, said pinion on the firstnamed feed-roll shaft, and said pinion on the second shaft for the severing device being each engaged directly with a pinion on said third shaft for the Geneva drive device, the several feeding and severing instrumentalities being thereby coordinated in a compactly organized mechanism for the intended purpose.

2. Means for severing sections of tipping material for application to the running wrapper Web of a cigarette rod making machine, as claimed in claim 1, wherein the feeding period of said intermittent drive comprises the major portion of a revolution of the driving member of the Geneva drive.

3. Means for severing sections of tipping material for application to the running wrapper web of a cigarette rod making machine as claimed in claim 1, wherein the feeding period of said intermittent feed comprises 270 of a revolution of the driving member of the Geneva drive.

JACK SHACKLETON. 

